期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2012

38

6

656-661

基金项目：湖南省烟草专卖局科研项目（09-11Aa02） 湖南省研究生科研创新项H（CX200981491

本校为第一机构

在联合国粮农组织(FAO)“3414”试验方案的基础上,添加无肥处理(称为“3415”方案),通过田间小区试验,探讨当地烟稻轮作条件下烤烟施用氮、磷、钾肥的效应及最佳施肥量。结果表明:在烟稻轮作地区,烤烟作物的地力贡献较小,无肥区产量仅占氮、磷、钾平衡施肥处理产量的39.4%;随着氮肥、磷肥和钾肥施用水平的提高,产量先增加,后下降;氮、磷、钾平衡施肥处理的产量(3 315.9 kg/hm~2)最高,效益(34 371.4元/hm~2)最好,增产效果最好;氮的缺乏对烟叶产量的影响最大,其次是磷和钾,缺氮、缺磷和缺钾处理的产量,分别占氮、磷、钾平衡施肥处理产量的78.3%、79.4%和89.7%;“3414”方案得到的试验数据不能用三...

FAO ＂3414＂ design plus no fertilizer treatment called ＂3415＂ design was used in field plot experiment to investigate the effect of different application of N, P and K fertilizer on flue-cured tobacco under local rice-tabacco rotation system. The results showed that in the region applying rice-tabacco rotation, soil contributed little to the yield of tobacco crops, yield in no fertilizer area only accounted for 39.4% of that in area with balanced NPK fertilization; with the increasing of N, P and K, the yield increased first, and then declin...